Weathering of white walls in the sunny south

[faraway]

Looking at endless series of photos a very light wash might be ok. But black is not correct. The "white" walls in Vernon have a tendency to an extreme light and soft tone of brown color if they become older. May be I should experiment with "brown wash". If I would not spray with the rattle can but with an airbrush I would put a drop of brown in the white paint.